| Value | Category | 
                                    
                    
                        | 1 | On-Farm machine | 
                                    
                    
                        | 2 | Cooperative Union factory | 
                                    
                    
                        | 3 | Other Large scale farm | 
                                    
                    
                        | 4 | Private factory/Mill | 
                                    
                    
                        | 8 | Other (specify) | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.